CN1209866A - Isolation tool - Google Patents
Isolation tool Download PDFInfo
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- CN1209866A CN1209866A CN97191938.0A CN97191938A CN1209866A CN 1209866 A CN1209866 A CN 1209866A CN 97191938 A CN97191938 A CN 97191938A CN 1209866 A CN1209866 A CN 1209866A
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- utensil
- pipeline
- ring
- frame
- catching
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/1283—Plugging pig
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Pipe Accessories (AREA)
- Sealing Devices (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Surgical Instruments (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
There is described an improved pipeline isolation tool (10) for plugging a pipeline at a predetermined location, comprising a housing (30) having first and second ends (29, 41) adapted for movement through a pipeline (1), seals (48) being radially expandable into fluid sealing contact with an inner wall (2) of the pipeline (1) disposed annularly about the housing, and a plurality of braking members (120) including grips (46) for frictionally engaging the inner wall (2) of said pipeline (1) to lock the isolation tool (10) in position, the braking members (120) being selectively and repetitively movable between a first position in which the grips (46) are disengaged from the inner pipeline wall (2) and a second position in which the grips engage the inner wall.
Description
Field of the present invention
The present invention relates to a kind of pipeline isolation tool, more specifically to the stifled device of a kind of duct plug, it is used for blocking up or seal this pipeline at the pre-position plug among can inserting a pipeline.
Background of the present invention
The stifled machine of duct plug can insert among the pipeline by a guide tube, can singlely use, and also can use in pairs, is used for cutting off predetermined pipeline section and repairs or change valve or other devices in isolated area.Utilize in the pipeline product fluid that the stifled machine of this plug is advanced to specified position, and come the spike plug to block up machine on the ground with prior art.In case the arrival desired location has just been cut off ducted fluid and has been flowed, send a signal by the operator of outside and activate this plug resistance machine, it forms sealing with regard to heading on inner-walls of duct like this.In case the stifled machine of this plug is fixed, utilize second stifled machine of plug or separating valve, just can isolate the pipeline section that part need be repaired or change in downstream, the place of shutting.Release out pressure in this pipeline isolation district and product and produce a suitable working environment needn't remove to discharge pressure or fluid in the adjacent tubular segments.
When the pipeline section that will repair drains fully, can take off this section and be changed.One completes repairs, and the operator will send another signal and unclamp this plug resistance machine, and ducted fluid product recovers to flow and this plug resistance machine is taken away, and guide tube or descaling machine harbour (Pigtrap) by a vicinity takes out it from pipeline then.
The stifled machine of plug is well-known prior art, can be at this referring to U. S. Patent 4,422, and 477,4,854,384,5,293,904 and Canadian Patent 1,292,704 and Canadian publication application No.2,042,338.The latter relates more specifically to pipeline cleaning, one of ordinary skill in the art will appreciate that, it is used to implement and fills in stifled different purpose and the functions of machine.
The stifled machine of this type of plug generally includes an expandable glue elasticity sealing that can form fluid-tight resistance barrier.The pressure that ducted product produced is usually very high, and these sealings itself still are not enough to withstand this pressure and come the stifled machine locking of plug is put in place.Therefore just utilizing hydraulic coupling to drive saddle or keep plate grabs it to block inner-walls of duct.The pressure difference enhancing that these saddles or keep plate utilize the into effect of carving to make usually and cross over the stifled machine of this plug is guaranteed stronger catching by the pressure that keep plate acts on the tube wall.It is essential and in pipeline, to lock the stifled machine of this plug.In case the locking failure, the stifled machine of plug just may be ruined and repair the staff in the district and may form ecocatas-trophe to be pushed out quite at a high speed.
Though in these years the design of the stifled machine of plug greatly improves, but still has significant deficiency, very importantly, existing utensil only can bear the product pressure from a side, also must directedly exactly keep out by the pressure head of design direction effect forming sealing.This has limited its versatility.
And existing utensil can only be finished the single seal operation, before reusing, it must be taken out from pipeline and change valve and add energy again.For example, the compressed nitrogen below the hydraulic fluid of a kind of widely used energy in independent accumulator.For fixing this utensil, hydraulic fluid will be released, and utilizes explosive power to open valve and fixes saddle.When work is finished, open another blast valve (explosive valve) fluid-evacuation is gone out pipeline, decontrol this utensil therefrom.Power source to the stifled machine of this plug has exhausted fully, must take out this utensil and come the filling accumulator and change the blast valve from pipeline.This is consuming time spending, and shows that the plug that needs really really repeatedly to fix blocks up machine.
Another shortcoming of the stifled device of existing plug be finishing pipe-line reconditioning after with loosen before the utensil pressure of can not balance crossing over its both sides.Usually before loosening the stifled machine of plug, on the pipe-line reconditioning section, punch and introduce fluid.Utilize blast impulse to wash the stifled machine relief valve of plug open, recover pipeline and flow, and the stifled machine of plug is taken out at nigh washing machine harbour.Overhaul the stifled machine of this plug then and it is filled energy.Therefore, that wants most provides a kind of stifled machine of plug that has inner collateral line system, can open this bypass and allow fluid flow through the stifled machine of plug to come the ambilateral pressure of balace weight, and needn't hole repairing on the pipeline section.
Summary of the present invention
Therefore, an object of the present invention is to provide a kind of stifled machine of duct plug of eliminating and alleviating the prior art defective.
Another object of the present invention provides a kind of two-way utensil that can repeatedly locate.
From hereinafter describe in detail, the features and advantages of the present invention can be seen very clearly.
The invention provides a kind of being used for is keeping out the braking device that described ducted hydrodynamic pressure locks onto a precalculated position to the pipeline cut off device, this pipeline isolation tool is used to fill in disconnected pipeline, it comprises a frame that can move and can support described braking device in described pipeline, this braking device comprises: some catching devices, arrange around described frame, be used for the described side opposite of friction engagement described utensil is locked in a described ducted precalculated position; Bearing device supports in the described catching device corresponding at least one respectively independently, and first and second parts that make described catching device along the longitudinal direction of described frame mutually axially separately; Positioning device can be subjected to drive and move described bearing device between the primary importance and the second place, and in this primary importance, described catching device is shown to dissociate to come in described; In this second place, described catching position is being meshed described internal surface and described utensil is being locked onto described precalculated position; And drive unit, be used to drive described positioning device, make described catching device between its described first and second positions, do selected motion.
According to a further aspect in the invention, a kind of sealing system that prevents that fluid ring from leaking around the blocking-up utensil is provided, this blocking-up utensil is used at pipeline of pre-position plug resistance, and described system comprises: at least the first and second elastomer seals, around described utensil setting; Described first and second Sealings are spaced apart along the longitudinal direction axis of described utensil, and can be radially expanded to and form fluid-tight with described side opposite and contact; The sealed expansion device, but be activated the described Sealing of radial expansion and make itself and described inner surface of pipeline form fluid-tight to contact; And drive unit, can drive described sealed expansion device.
According to another aspect of the invention, provide a kind of pipeline blocking-up utensil that is used for cutting off in a certain precalculated position a pipeline, described utensil comprises: one can be along the frame that moves in the pipeline; Around the seal arrangement of this frame circumferential arrangement, be expandable into and reach fluid-tight with described inner-walls of duct and contact; The braking device of inner-walls of duct with friction engagement, it is being resisted the pressure of pipeline fluid and described utensil is being fixed on a precalculated position, it is characterized in that it also comprises a bypass, the latter comprises: a runner that connects described frame is used to allow pipeline fluid flow to the other end from an end of described frame; Can open and close the valving of described runner selectively; And braking device, its response one input and open described valve selectively and allow fluid flow through and close described valve and prevent that fluid from flowing through, wherein said bypass can be used to regulate or the balanced pipeline fluid pressure of crossing over described frame.
In accordance with a further aspect of the present invention, provide a kind of pipeline blocking-up utensil that is used for cutting off in a certain precalculated position a pipeline, described utensil comprises: one can be along the frame that moves in the pipeline; Around the seal arrangement of this frame circumferential arrangement, be expandable into and reach fluid-tight with described inner-walls of duct and contact; With can with the braking device of inner-walls of duct friction engagement, it is being resisted the pressure of pipeline fluid and described utensil is being fixed on a precalculated position, it is characterized in that it also comprises an electricity one machine drive system, the latter comprises: a leading screw driven member, can encircle along its longitudinal axis clockwise and rotate counterclockwise; A former moving device is followed described driven member and with its rotation at the operation first line of a couplet; And linkage, described driven member with scyewed joint, can with described driven member clockwise and rotate counterclockwise and move forward and backward with respect to described frame vertically, in the time will being fixed to described precalculated position to described utensil, described linkage activates described sealing and braking device along moving axially of a direction; In opposite direction mobile of described linkage unclamped described sealing and braking device, and described utensil can be moved with respect to described pipeline; Described thus utensil can repeatedly be filled in disconnected described pipeline and needn't take out described utensil from described pipeline between described each time.
Advance on the one hand according to of the present invention, a kind of pipeline blocking-up utensil that is used at a pipeline of precalculated position plug resistance is provided, it comprises: stand arrangement, and it can move and comprise first and second ends in described pipeline; Seal arrangement around described frame circumferential arrangement, and can be radially expanded to the inwall that fluid-tight is contacting described pipeline; And some brake components, the pressure of resisting in the described pipe but the catching device friction engagement that is equipped with on it inwall of described pipeline is locked in described precalculated position to described isolation tool; Described catching part is perseveration between one first and second position selectively; At described first, described catching device breaks away from described inwall; In the described second place, described catching device is meshing described inwall.
According to another aspect in addition of the present invention, a kind of pipeline blocking-up utensil that is used at a pipeline of precalculated position plug resistance is provided, comprising: stand arrangement, can pass described pipeline and move, and have first and second ends; Seal arrangement comprises at least the first and second elastomer seals that circumferentially are provided with around described frame, and the latter is along described frame longitudinal direction axially-spaced, but and radial expansion be that fluid-tight is contacting described side opposite; The sealed expansion device can expand into fluid-tight to described seal radial and contact described side opposite; Braking device is used for described utensil is locked in described precalculated position, and described braking device comprises: some catching devices around described frame setting, and the latter is used for friction engagement and described internal surface and described utensil is locked in described precalculated position; Supporting support device one of corresponding at least in the described catching device respectively, making the longitudinal direction axially-spaced of first and second subgroups of described catching device along described frame; And be used between the primary importance and the second place moving the positioning device of described bearing device, in primary importance, described catching device breaks away from described internal surface; In the second place, described catching device meshes described internal surface and described utensil is locked in described precalculated position; And drive unit, can select to drive described positioning device and described sealed expansion device, the former moves described catching device between described first and second positions.
Brief description
Set forth the preferred embodiments of the present invention below with reference to the accompanying drawings in more detail.
Fig. 1 is the sectional view of the stifled machine of plug of the present invention;
Fig. 2 is the external side view of the stifled machine of plug among Fig. 1;
Fig. 3 is the schematic electrical diagram of the stifled machine of plug of the present invention;
Fig. 4 is used to activate the schematic electrical diagram that this plug blocks up the releasing mechanism of machine; And
Fig. 5 is the schematic electrical diagram of the outside control circuit of the stifled machine of this plug.
Preferred embodiment describes in detail
Referring to Fig. 1, the stifled machine 10 of plug is arranged in pipeline 1 and not with its sealing and locking.The stifled machine of illustrated plug is to be in feed status, moves in the direction of arrow A generally after inserting by a guide tube or washing machine harbour (not shown).Yet be noted that this utensil is two-way in itself, can advance sometimes on request round about.
Generally speaking, the stifled machine 10 of plug comprises a mainframe 30, it within it portion supporting a motor driven systems 50, hereinafter it can be described in detail; It also various sealings, catching break and saddle at its external support, is used for carrying and locatees the stifled machine of this plug forming a kind of fixing fluid-tight obstruction in pipeline.
Usually, frame 30 comprises a compression sleeve 56, and when it was driven in the direction of arrow B by the following drive system that will describe in detail 50, it can make urethane seal ring 48 be expanded to fluid-tight and contact inner-walls of duct 2.Simultaneously, friction pad 46 radially outwards on the locking assembly 120 that can oppositely pivot alternately move and contact with wall 2 formation catchings, thereby lock the position of the stifled machine of plug reliably with respect to pipeline.
Unlike the stifled machine of the plug that utilized electricity-liquid to drive in the past, this plug blocks up machine utilization electricity-machine drive system and realizes repeatedly locating, and this will address hereinafter.Though making electricity consumption-machine system on the stifled machine of plug is new wound, this drive system itself is well-known, as in the aviation industry; And its primary clustering only will be described hereinafter, all the other details those of ordinary skills one hope as can be known.
Driving the moving motive force of system is driven by a 24VDC gear motor 3, the latter is connected on the harmonic wave drive unit, and this harmonic wave drive unit comprises a deformable tooth bar 5, an annular rack 6 and a harmonic generator 7 and produces that to output to the final driving reduction speed ratio that drives on the screw mandrel 13 be 120: 1.Screw mandrel 13 holds 14 places by thrust-bearing 9 rotatable support within it.Separator disc 11 on the end 14 that clips between the relative bearing 9 of along continuous straight runs this screw mandrel with respect to the driving mechanism axially locating.The relative outer end 15 that drives screw mandrel is shaped on screw thread until its top is meshed with a drive nut 55 that is shaped on internal thread in its outside, the latter is by a pressure house 56 guiding vertically moving forward and backward along frame.Pressure house 56 sliding engaged the annular outer surface of a front cover 31, and this front cover is connected in the upstream extremity 29 of frame 30.Guiding plug-in unit 26 sliding engaged in end cap 31 sleeve 56 and are prevented that it from rotating with respect to end cap and frame.Very clear, drive screw mandrel 13 and nut 55 and sleeve 56 are moved in the direction of arrow B to a direction rotation, rotate and nut and sleeve are moved in the direction of arrow A to another direction and drive screw mandrel.Nut 55 and sleeve 56 utilize a threaded locking circle 57 to be linked together.
The top, upstream of frame 30 is equipped with a buffering shell 58 and a polyurethane buffering spare 59, and they are by threaded fastener 64 fix in position.
In the downstream of frame 30, its top encloses 33 after a rear end cover 32 and a cooperation are installed, and the latter is spun on the frame with screw thread at 41 places.Back circle 33 comprises that a flange 37 meshes a shoulder 38 on the rear end cover 32 and fixes this rear end cover on the throne.Rear end cover comprises a connector lug group 97 that is used to connect a battery pack 200, and this will describe in detail later.
The sealing of dish foremost/cup-shaped, and is clamped on the frame to the threaded fastener 44 on the front sealing compression ring 40 by clamp ring 43 and scyewed joint around compression sleeve 56 concentric ring.Separator 39 between clamp ring helps to prevent the excessive screwing of fastening piece 44, otherwise just may cause dish/the compression torsional deformation of cup-shaped sealing.
The sealing of afterbody dish/cup-shaped is to around tail circle 33, and is clipped on the frame equally by the threaded fastener 44 in clamp ring 43, separator 39 and the precession tail seal compression ring 34.
Along with compression ring 56 continues to shrink, ring 42 self will begin to slide in the direction of arrow B, and this causes friction pad to be carved into becoming with wall 2 formation catchings to contact the most at last.More particularly, the locking assembly of the stifled machine of this plug comprises the pivotable lock arm 120 of some vertical alignment, and they circumferentially are arranged between an anterior locking ring 42 and the rear portion locking ring 45 with one heart around frame 30 edges.Each lock arm comprises that a link rod 121, head 122, reverse pin 124 and who pivotly this link rod and head is linked together embed replaceable friction pad 46 among the head 122.Pivot pin 127 is connected to each lock arm 120 on one of locking ring 42 or 42, and adjacent lock arm is connected on other locking ring 42 or 45, thus make along on the longitudinal direction of support 30 adjacent each lock arm is aimed at relatively.
Each head 122 comprises carving under 130, the heels 131 in surface and one for one carves into surface 132.
When promoting ring 42 to ring 45, at first be head 122, secondly whole lock arm 120 promptly boosts and carves into surface 136 and make plug-in unit 46 shift to wall 2.Carve into surface 137 because heel 131 is continuing, friction pad will be more progressive towards moving of wall 2, is vital but the power into of carving between friction pad and wall is enough to withstand the pressure difference of leap utensil for reliable pinning tube wall.Because latch wall 120 interlocks of relatively aiming at boost, their motion is tending towards reaching from spacing and self balancing effect, moreover, just in case drive unit lost efficacy, from the left side or the right cross over the pressure difference that plug blocks up the machine effect and in fact strengthen locking intensity.In conjunction with adopting alternate seal ring 48, the distinct advantages of this utensil is from the upstream or downstream all can withstand hydrodynamic pressure.
Along with compression sleeve 50 continues to shrink, but before wall 2 is lived in friction pad 46 catchings, comprise that the whole brake assemblies of rear portion locking ring 45 will move to rear portion seal compression ring 34 along the direction of arrow B.Like this, each ring on 45 and 34 carve surface 62 into just with rear seal ring 48 on carve into that surface 63 interacts the radial expansion rear seal relatively, itself and inwall formation fluid-tight are contacted.
Up to being retracted to formation, compression sleeve 56 locks fully.Ring 34 comprises a saucerspring 36, is providing some to absorb elasticity in the locking process fully.
After plug blocked up the machine locking, front sealing ring 48 sealed tight the containing firmly in the one side by cup-shaped, was lived by the into face 130 tight containings of carving on the contiguous locking assembly head 122 at opposite side.Rear portion ring 48 contains to live by contiguous locking assembly head is same in a side equally, is contained to live by dish 49 at opposite side.Containing qualification sealing 48 like this is in order to prevent that better it from producing extrusion-deformation under pressure.
In order to unclamp the stifled machine of plug, make gear motor 3 counter-rotatings and extraction compression sleeve 56.Very clear, this opened ring in 40,42 and 45 minutes, and seal ring 48 is retracted to its normal size, and friction pad and wall 2 disengage, and leaf spring 60 or similar contracting mechanism make link rod 120 return moving position of its former beginning and end, as shown in Figure 1.Ring shoulder 96 on each ring 40,45 and 45 is moved ring 40 on the ring 42 to, and these identical ring shoulders also limit and can shrink the whole degree of getting up to compression sleeve 56.
At this moment, the stifled machine of plug can move to a reposition in pipeline, and its all parts had both been locked a bit infringement and the damage of also being unclamped.This is different from the stifled machine of known plug, and latter's valve that need explode discharges the fluid pressure that is used to lock this utensil, this just need be after lock at every turn from pipeline taking-up fill in the machine of blocking up contained explosion energy once more.Friction pad 46 is preferably lived tube wall by catching securely and it is not caused the deformable material manufacturing of damage.These pads can stand at least, and 2-3 locking just needs to change.A kind of suitable friction pad material for example is a brass, and preferably it comprises micro-fine grain abrasive, as the powdery Tungsten carbite.This can form stronger friction engagement and not undermine tube wall between friction pad and tube wall.
Before this, after repairing and before the stifled machine of relieving plug, must punch in new zone of repairing and introduce pipeline fluid, if its pressure is enough to reduce the pressure difference of the stifled machine of leap plug.Obviously people do not wish in the punching of new maintenance area very much, also relate in addition to repairing on-the-spot cost of transporting fluid and pump pressure equipment.Moreover if pressure difference can not be fully balanced, the stifled machine of plug will move when loosening and draw the catching plug along tube wall, and this can damage tube wall and plug.Thereby, if comprising, the stifled machine of plug can select actuator to come to provide a bypass for pipeline fluid flows into the repairing district, this is beyond doubt well.But the pressure reduction between the stifled machine of this balanced plug, and be convenient to staticly decontrol and throw off from tube wall, do not undermine the sliding portion of plug again or drag portion.
The applicant has developed a bypass, and description 1 is illustrated.Utilize perforate 140, runner that connects a front cover 31 and a bypass cover plate 21 150, axially aligned runner 160 and another the aligning runner 170 that connects back circle 33 that connects frame 30 on drive nut 55 to form from the fluid communication of the end to end of plug blocking piece.
Circulation in the control bypass is provided with a bypass ball valve 20 in runner 150.This ball valve is installed in the manipulation of a remote control gear motor 22 on the mounting plate 16.Motor 22 rotates an axle 18 by bearing 19 supportings, and this axle activates a bent axle 17 again, and the latter rotates this ball valve and selects to open and close runner 150.Before decontroling the stifled machine of plug, can open bypass by the operator of outside and pipeline fluid is entered repair the district and the described pressure difference of balance.The operator closes this bypass then.After this just can decontrol the stifled machine of plug (or the stifled machine of a plurality of plug) safely, the latter keeps static and recovers to flow up to ducted fluid.
This bypass also of great use when the stifled machine of plug is located at the desired location place.A pressure transducer 12 is set monitors pipeline pressure.If when using a pair of plug to block up machine, after opening bypass, can use a sensor 12 to monitor pipeline pressure, repair the pressure in district with another monitoring.The operator will know when pressure difference can reach balanced, decontrols the stifled machine of plug then.
Utilize O type ring 175 and the polyester suitably arranged to seal sealing plug to block up each parts of machine.A compound cover 25 is set between end cap 31 and nut 55 realizes moving forward and backward of nut.
The present invention also comprises a standby motor 4 and the coupling 8 of dissociating, and has an independent power supply, in case gear motor 3 or its power supply break down.
Referring to Fig. 2, gear motor 3 used power supplys are one to be placed on a battery pack in the independent battery component 200, as the stifled machine 10 of plug, assembly 200 comprises: the housing 230 that sliding bearing moves in pipeline, it is to support by the two-way dish 249 of a pair of isolated polyurethane and a pair of polyurethane cup-shaped sealing 279 that links that are located near this housing opposite end, and is together in series with the stifled machine of plug.Resemble the front with reference to as described in the stifled machine of plug, with clamp ring 243 and fastening piece 244 dish 249 with seal 279 and be connected on the housing 230.Battery component 200 also comprises a connector lug group 99, and the latter is connected on the stifled machine 10 of plug by a conduit 290, and this conduit is for example connecting connector lug group 97 and 98 pivotly by two pivot pins 291.Conduit 290 provides one to protect passage for power line and the actuating cable between other electric assemblies of battery pack and various motor and the stifled machine 10 of plug.Pivoted connection between conduit and connector lug group 97 and 98 also can make battery component rotate with respect to the stifled thermomechanical components of plug, and its significance is that utensil of the present invention can be easier to adapt to ducted turn of bilge.In this connection, the diameter of this utensil obviously can change with pipe diameter.Also have, the said structure that this plug blocks up machine is intended to reduce to greatest extent its length, so that it can adapt to the turn of bilge with little radius of central line to three times of pipeline nominal diameters.
Fig. 3,4 and 5 is stifled machine 10 of plug and standby mechanism and the used schematic electrical diagram of outside operation control of dissociating thereof.
Foregoing description of the present invention is intended to show bright the preferred embodiments of the present invention, rather than limits the scope of the invention, and the various modifications that those of ordinary skills are easy to understand all within the scope of the present invention.Scope of the present invention is defined by appended claim.
Claims (47)
1. one kind is used for the pipeline cut off device is being kept out the braking device that described ducted hydrodynamic pressure locks onto a precalculated position, this pipeline isolation tool is used to fill in disconnected pipeline, it comprises a frame that can move and can support described braking device in described pipeline, and this braking device comprises:
Some catching devices are arranged around described frame, be used for the described side opposite of friction engagement described utensil is locked in a described ducted precalculated position;
Bearing device supports in the described catching device corresponding at least one respectively independently, and first and second parts that make described catching device along the longitudinal direction of described frame mutually axially separately;
Positioning device can be subjected to drive and move described bearing device between the primary importance and the second place, and in this primary importance, described catching device is shown to dissociate to come in described; In this second place, described catching position is being meshed described internal surface and described utensil is being locked onto described precalculated position; And
Drive unit is used to drive described positioning device, makes described catching device do selected motion between its described first and second positions.
2. braking device as claimed in claim 1, it is characterized in that, described bearing device comprises some leverages, and the latter is all along the alignment of described stands longitudinal and arrange at interval at its hoop abreast that mutually each described leverage is supporting at least one corresponding catching device thereon.
3. braking device as claimed in claim 2 is characterized in that, with respect to the corresponding end of described frame, the neighbor aims in opposite directions among the described leverage.
4. braking device as claimed in claim 3 is characterized in that, described positioning device comprises spaced first and second rings, and they are around the frame circumferential arrangement and be provided with described leverage betwixt; Described catching device is moved between its first second place, and described ring can shift near and away each other.
5. braking device as claimed in claim 4 is characterized in that, the described leverage that is supporting the described first portion of described catching device is connecting one of described first and second rings rotationally at the one end; The leverage that is supporting the described second portion of described catching device is connecting another of described first and second rings rotationally at the one end.
6. braking device as claimed in claim 5, it is characterized in that, described leverage its described connecting rotationally described first and second the ring ends end opposite with carve into concern apical grafting described first and second the ring in another, thereby make in the described first and second ring move toward one another, described leverage is with it carves into that the end of relation moves to described internal surface, is positioned at its described second place until described catching device.
7. braking device as claimed in claim 6, it is characterized in that, when described catching device is positioned at its described second place, described catching device reaches to carve into all sidedly with described internal surface and contacts, and makes the pressure that acts on the arbitrary end of frame all remain on its described second place to the arbitrary of described first and second parts of described catching device or two.
8. braking device as claimed in claim 7, it is characterized in that, each described leverage comprises a joint part and a head that is connecting one of described joint part end pivotly, and the other end of described joint part is connecting one of described first and second rings rotationally; Described catching device and described head are connecting the described head facing to described internal surface movably.
9. braking device as claimed in claim 8 is characterized in that; Described head comprises carves into surface, the latter can with one of corresponding in described first and second rings on carve into to subsides that face interacts by the apical grafting relation, along with described first and second rings are mobile in opposite directions, described head is moved to described internal surface.
10. braking device as claimed in claim 9, it is characterized in that, each described ring includes at least one and adjacent first and second carves into surface, and described first carves surface into is steep angle with respect to the longitudinal axis of described frame, is used for more promptly moving described head to described internal surface; Described second carves into, and the surface is slow angle with respect to described longitudinal axis, is used for forming between described catching device and described internal surface carving into comprehensive contact.
11. braking device as claimed in claim 10 is characterized in that, it also comprises retraction means, along with described first and second the ring mutually away from, this device of giving up the throne is return its primary importance validly to described leverage.
12. braking device as claimed in claim 11 is characterized in that, described catching device comprises removable pad, and the latter is made by the deformable metal material also softer than described internal surface hardness.
13. braking device as claimed in claim 12 is characterized in that, described pad is made by brass.
14. braking device as claimed in claim 13 is characterized in that, described brass is comprising the bulk material of predetermined quantity, is used to strengthen the rubbing contact between described pad and described inwall.
15. braking device as claimed in claim 10 is characterized in that, described first to carve face into be 60-75 ° with respect to the angle of described longitudinal axis, and described second to carve face into be 5-15 ° with respect to the angle of described longitudinal axis.
16. a sealing system that prevents that fluid ring from leaking around the blocking-up utensil, this blocking-up utensil are used at pipeline of pre-position plug resistance, described system comprises:
At least the first and second elastomer seals are around described utensil setting; Described first and second Sealings are spaced apart along the longitudinal direction axis of described utensil, and can be radially expanded to and form fluid-tight with described side opposite and contact;
The sealed expansion device, but be activated the described Sealing of radial expansion and make itself and described inner surface of pipeline form fluid-tight to contact; And
Drive unit can drive described sealed expansion device.
17. sealing system as claimed in claim 16, it is characterized in that, described sealed expansion device comprises that at least the first and second pairs are carved into ring, they circumferentially are provided with around described utensil, and into be provided with at least one described Sealing between the ring to carving at each, driven by described drive unit, carve into that ring can shift near relatively and remove and expand and shrink described Sealing for described every pair.
18. sealing system as claimed in claim 17, it is characterized in that, described Sealing comprises carves into surface, it is suitable for carving into surface interaction with described applying of carving on the ring into, along with every pair of described ring of carving into moves in opposite directions and described Sealing is expanded, along with carving into the ring reverse motions and described Sealing is shunk to described.
19. sealing system as claimed in claim 18, it is characterized in that, described isolation tool also comprises the braking device between described at least the first and second Sealings, but the described internal surface of described braking device friction engagement and resisting described ducted hydrodynamic pressure described utensil is locked in ducted a certain precalculated position, thereby described Sealing seals described braking device from the pipeline fluid of exerting pressure in the two ends of described utensil.
20. sealing system as claimed in claim 19 is characterized in that, described braking device comprises:
Some catching devices are arranged around described frame, be used for the described side opposite of friction engagement described utensil is locked in described ducted described precalculated position;
Bearing device supports in the described catching device corresponding at least one respectively independently, and first and second parts that make described catching device along the longitudinal direction of described utensil mutually axially separately;
Positioning device can be subjected to drive and move described bearing device between the primary importance and the second place, and in this primary importance, described catching device is shown to dissociate to come in described; In this second place, described catching position is being meshed described internal surface and described utensil is being locked onto described precalculated position; And
Drive unit is used to drive described positioning device, makes described catching device do selected motion between its described first and second positions.
21. sealing system as claimed in claim 20 is characterized in that, described positioning device comprises spaced first and second rings, and they are around the frame circumferential arrangement and be provided with described leverage betwixt; Described catching device is moved between its first second place, and described ring can shift near and away each other.
22. sealing system as claimed in claim 21 is characterized in that, described first ring and described first pair describedly carve into that one of ring is identical assembly, and described second ring and described second pair describedly carve into that one of ring is identical assembly.
23. a pipeline blocking-up utensil that is used for cutting off in a certain precalculated position a pipeline, described utensil comprises: one can be along the frame that moves in the pipeline; Around the seal arrangement of this frame circumferential arrangement, be expandable into and reach fluid-tight with described inner-walls of duct and contact; The braking device of inner-walls of duct with friction engagement, it is being resisted the pressure of pipeline fluid and described utensil is being fixed on a precalculated position, it is characterized in that it also comprises a bypass, and the latter comprises:
A runner that connects described frame is used to allow pipeline fluid flow to the other end from an end of described frame;
Can open and close the valving of described runner selectively; With
Braking device, its response one input and open described valve selectively and allow fluid flow through and close described valve and prevent that fluid from flowing through, wherein said bypass can be used to regulate or the balanced pipeline fluid pressure of crossing over described frame.
24. utensil as claimed in claim 23 is characterized in that, described braking device comprises that one is followed the motor of described valving at the operation first line of a couplet, is used to respond described input and opens and closes this valving.
25. a pipeline blocking-up utensil that is used for cutting off in a certain precalculated position a pipeline, described utensil comprises: one can be along the frame that moves in the pipeline; Around the seal arrangement of this frame circumferential arrangement, be expandable into and reach fluid-tight with described inner-walls of duct and contact; With can with the braking device of inner-walls of duct friction engagement, it is being resisted the pressure of pipeline fluid and described utensil is being fixed on a precalculated position, it is characterized in that it also comprises an electricity one machine drive system, the latter comprises:
A leading screw driven member can encircle along its longitudinal axis clockwise and rotate counterclockwise;
A former moving device is followed described driven member and with its rotation at the operation first line of a couplet; And
Linkage, described driven member with scyewed joint, can with described driven member clockwise and rotate counterclockwise and move forward and backward with respect to described frame vertically, in the time will being fixed to described precalculated position to described utensil, described linkage activates described sealing and braking device along moving axially of a direction; In opposite direction mobile of described linkage unclamped described sealing and braking device, and described utensil can be moved with respect to described pipeline; Described thus utensil can repeatedly be filled in disconnected described pipeline and needn't take out described utensil from described pipeline between described each time.
26. utensil as claimed in claim 25 is characterized in that, it also comprises an auxilliary moving device, when described former moving device breaks down, can select this auxilliary moving device to rotate described driven member.
27. a pipeline blocking-up utensil that is used at a pipeline of precalculated position plug resistance, it comprises:
Stand arrangement, it can move and comprise first and second ends in described pipeline;
Seal arrangement around described frame circumferential arrangement, and can be radially expanded to the inwall that fluid-tight is contacting described pipeline; And
Some brake components, the pressure of resisting in the described pipe but the catching device friction engagement that is equipped with on it inwall of described pipeline is locked in described precalculated position to described isolation tool; Described catching part is perseveration between one first and second position selectively; At described first, described catching device breaks away from described inwall; In the described second place, described catching device is meshing described inwall.
28. utensil as claimed in claim 27 is characterized in that, described braking device comprises some along the alignment of described stands longitudinal with along the lever of circumferentially spaced, and the neighbor of described lever aims in opposite directions at described first and second ends of described frame.
29. utensil as claimed in claim 28 is characterized in that, each described lever supporting one abutting end corresponding at least in the described catching device; Make described lever when its described second place, described catching device is meshing described inwall with staggered pattern.
30. utensil as claimed in claim 29 is characterized in that, described frame contains the fluid bypass of a perforation, can select to open this bypass and allows the fluid in the described pipeline pass described frame, regulates or the balanced hydrodynamic pressure of crossing over described frame.
31. a pipeline blocking-up utensil that is used at a pipeline of precalculated position plug resistance comprises:
Stand arrangement can be passed described pipeline and be moved, and has first and second ends;
Seal arrangement comprises at least the first and second elastomer seals that circumferentially are provided with around described frame, and the latter is along described frame longitudinal direction axially-spaced, but and radial expansion be that fluid-tight is contacting described side opposite;
The sealed expansion device can expand into fluid-tight to described seal radial and contact described side opposite;
Braking device is used for described utensil is locked in described precalculated position, and described braking device comprises: some catching devices around described frame setting, and the latter is used for friction engagement and described internal surface and described utensil is locked in described precalculated position; Supporting support device one of corresponding at least in the described catching device respectively, making the longitudinal direction axially-spaced of first and second subgroups of described catching device along described frame; And be used between the primary importance and the second place moving the positioning device of described bearing device, in primary importance, described catching device breaks away from described internal surface; In the second place, described catching device meshes described internal surface and described utensil is locked in described precalculated position; And
Drive unit can select to drive described positioning device and described sealed expansion device, and the former moves described catching device between described first and second positions.
32. utensil as claimed in claim 31 is characterized in that, described braking device is between described at least the first and second Sealings.
33. utensil as claimed in claim 32, it is characterized in that, described bearing device comprises some leverages, and the latter is all along the alignment of described stands longitudinal and arrange at interval at its hoop abreast that mutually each described leverage is supporting at least one corresponding catching device thereon.
34. utensil as claimed in claim 33 is characterized in that, with respect to the corresponding end of described frame, the neighbor aims in opposite directions among the described leverage.
35. utensil as claimed in claim 34 is characterized in that, described positioning device comprises spaced first and second rings, and they are around the frame circumferential arrangement and be provided with described leverage betwixt; Described catching device is moved between its first second place, and described ring can shift near and away each other.
36. utensil as claimed in claim 35 is characterized in that, the described leverage that is supporting the described first portion of described catching device is connecting one of described first and second rings rotationally at the one end; The leverage that is supporting the described second portion of described catching device is connecting another of described first and second rings rotationally at the one end.
37. utensil as claimed in claim 36, it is characterized in that, described leverage its described connecting rotationally described first and second the ring ends end opposite with carve into concern apical grafting described first and second the ring in another, thereby make in the described first and second ring move toward one another, described leverage is with it carves into that the end of relation moves to described internal surface, is positioned at its described second place until described catching device.
38. utensil as claimed in claim 37, it is characterized in that, when described catching device is positioned at its described second place, described catching device reaches to carve into all sidedly with described internal surface and contacts, and makes the pressure that acts on the arbitrary end of frame all remain on its described second place to the arbitrary of described first and second parts of described catching device or two.
39. utensil as claimed in claim 38, it is characterized in that, each described leverage comprises a joint part and a head that is connecting one of described joint part end pivotly, and the other end of described joint part is connecting one of described first and second rings rotationally; Described catching device and described head are connecting the described head facing to described internal surface movably.
40. utensil as claimed in claim 39, it is characterized in that, described head comprises carves into surface, the latter can with one of corresponding in described first and second rings on subsides are carved into face by the interaction of apical grafting relation, along with described first and second rings move in opposite directions, described head is moved to described internal surface.
41. utensil as claimed in claim 40, it is characterized in that, each described ring includes at least one and adjacent first and second carves into surface, and described first carves surface into is steep angle with respect to the longitudinal axis of described frame, is used for more promptly moving described head to described internal surface; Described second carves into, and the surface is slow angle with respect to described longitudinal axis, is used for forming between described catching device and described internal surface carving the into comprehensive contact of property.
42. utensil as claimed in claim 41, it is characterized in that, described sealed expansion device comprises that at least the first and second pairs are carved into ring, they circumferentially are provided with around described utensil, and into be provided with at least one described Sealing between the ring to carving at each, driven by described drive unit, carve into that ring can shift near relatively and remove and expand and shrink described Sealing for described every pair.
43. utensil as claimed in claim 42 is characterized in that, described first ring and described first pair describedly carve into that one of ring is identical assembly, and described second ring and described second pair describedly carve into that one of ring is identical assembly.
44. utensil as claimed in claim 31 is characterized in that, described drive unit comprises:
A leading screw driven member can encircle along its longitudinal axis clockwise and rotate counterclockwise;
A former moving device is followed described driven member and with its rotation at the operation first line of a couplet; And
Linkage, described driven member with scyewed joint, can with described driven member clockwise and rotate counterclockwise and move forward and backward with respect to described frame vertically, in the time will being fixed to described precalculated position to described utensil, described linkage activates described sealing and braking device along moving axially of a direction; In opposite direction mobile of described linkage unclamped described sealing and braking device, and described utensil can be moved with respect to described pipeline.
45. utensil as claimed in claim 44 is characterized in that, it also comprises an auxilliary moving device, when described former moving device breaks down, can select this auxilliary moving device to rotate described driven member.
46. utensil as claimed in claim 31 is characterized in that, also is provided with a fluid bypass in described utensil, described bypass comprises:
A runner that connects described frame is used to allow pipeline fluid flow to the other end from an end of described frame;
Can open and close the valving of described runner selectively; With
Braking device, its response one input and open described valve selectively and allow fluid flow through and close described valve and prevent that fluid from flowing through, wherein said bypass can be used to regulate or the balanced pipeline fluid pressure of crossing over described frame.
47. utensil as claimed in claim 46 is characterized in that, described braking device comprises that one is followed the motor of described valving at the operation first line of a couplet, is used to respond described input and opens and closes this valving.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/593,021 | 1996-01-29 | ||
| US08/593,021 US5924454A (en) | 1996-01-29 | 1996-01-29 | Isolation tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1209866A true CN1209866A (en) | 1999-03-03 |
Family
ID=24373025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97191938.0A Pending CN1209866A (en) | 1996-01-29 | 1997-01-28 | Isolation tool |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US5924454A (en) |
| EP (1) | EP0871835A1 (en) |
| CN (1) | CN1209866A (en) |
| AU (1) | AU1433997A (en) |
| EA (1) | EA000590B1 (en) |
| ID (1) | ID16483A (en) |
| MX (1) | MX9806065A (en) |
| NO (1) | NO983462L (en) |
| TR (1) | TR199801466T2 (en) |
| WO (1) | WO1997028398A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879604A (en) * | 2015-06-05 | 2015-09-02 | 周庆涛 | Train for quick sealing of pipeline |
| CN110578852A (en) * | 2019-09-23 | 2019-12-17 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN112718722A (en) * | 2020-12-17 | 2021-04-30 | 北京峦海阜程科技发展有限责任公司 | Blockage removing device and method for offshore oilfield pipeline |
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| CA2485354C (en) * | 2000-06-27 | 2008-06-03 | United Testing Corp. | A resilient seal |
| IES20020089A2 (en) * | 2002-02-08 | 2003-08-20 | Carsphairn Ltd | An improved pipeline isolation tool |
| US20050241475A1 (en) * | 2002-06-26 | 2005-11-03 | Harad Syse | Arrangement at a hydraulic cylinder on a manoeuvrable plug for plugging of pipes |
| NO320256B1 (en) * | 2003-12-05 | 2005-11-14 | Plugging Specialists Int | Plug with hydraulic cylinder and hydraulic cylinder |
| NO320317B1 (en) * | 2003-12-15 | 2005-11-21 | Plugging Specialists Int | Hydraulic cylinder control system, plug with a hydraulic cylinder, and method for setting and releasing a plug |
| US8235628B2 (en) * | 2005-03-17 | 2012-08-07 | Kellogg Brown & Root Llc | Continuously pressurized pipeline |
| US8256270B2 (en) * | 2005-04-14 | 2012-09-04 | Exxonmobil Upstream Research Company | Pipeline pressure tool |
| US20070023096A1 (en) * | 2005-07-29 | 2007-02-01 | Tdw Delaware, Inc. | Isolation tool for plugging the interior of a pipeline |
| NO325528B1 (en) * | 2005-12-19 | 2008-06-09 | Tdw Offshore Services As | "Biased seal element arrangement" |
| NO327094B1 (en) * | 2006-04-12 | 2009-04-20 | Tdw Offshore Services As | Plug with centralizing devices |
| NO327225B1 (en) * | 2006-12-22 | 2009-05-18 | Tdw Offshore Services As | Arrangement for use with a plug for sealing against an inner wall of a pipeline |
| US7841364B2 (en) * | 2007-11-07 | 2010-11-30 | Tdw Delaware, Inc. | Double block and bleed plug |
| US20090140133A1 (en) * | 2007-11-29 | 2009-06-04 | Halliburton Energy Services, Inc. | Pipeline pig and method for irradiation of bacteria in a pipeline |
| US8540429B1 (en) * | 2009-02-13 | 2013-09-24 | SeeScan, Inc. | Snap-on pipe guide |
| GB201013370D0 (en) * | 2010-08-09 | 2010-09-22 | Stats Uk Ltd | Pipeline isolation |
| US9400076B2 (en) * | 2011-03-31 | 2016-07-26 | The Safer Plug Company Limited | Electrical autonomous pipeline isolation tool |
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| GB2498978B (en) * | 2012-02-01 | 2017-03-29 | Stats (Uk) Ltd | Pipeline isolation check plug |
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| US10746339B2 (en) * | 2015-11-20 | 2020-08-18 | Usa Industries, Inc. | Gripping apparatus and devices for plugging of pipes, orifices or connecting |
| US11408548B2 (en) * | 2015-11-20 | 2022-08-09 | Usa Industries, Llc | Gripping apparatus and devices for plugging of pipes, orifices or connecting |
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-
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- 1996-01-29 US US08/593,021 patent/US5924454A/en not_active Expired - Fee Related
-
1997
- 1997-01-28 EP EP97900907A patent/EP0871835A1/en not_active Withdrawn
- 1997-01-28 CN CN97191938.0A patent/CN1209866A/en active Pending
- 1997-01-28 WO PCT/CA1997/000055 patent/WO1997028398A1/en not_active Application Discontinuation
- 1997-01-28 EA EA199800616A patent/EA000590B1/en not_active IP Right Cessation
- 1997-01-28 TR TR1998/01466T patent/TR199801466T2/en unknown
- 1997-01-28 AU AU14339/97A patent/AU1433997A/en not_active Abandoned
- 1997-01-29 ID IDP970264A patent/ID16483A/en unknown
-
1998
- 1998-07-28 MX MX9806065A patent/MX9806065A/en unknown
- 1998-07-28 NO NO983462A patent/NO983462L/en unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879604A (en) * | 2015-06-05 | 2015-09-02 | 周庆涛 | Train for quick sealing of pipeline |
| CN104879604B (en) * | 2015-06-05 | 2017-03-15 | 周庆涛 | Pipeline quick blocking train |
| CN110578852A (en) * | 2019-09-23 | 2019-12-17 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN110578852B (en) * | 2019-09-23 | 2021-08-27 | 中国石油大学(华东) | Intelligent pipeline plugging device and plugging method thereof |
| CN112718722A (en) * | 2020-12-17 | 2021-04-30 | 北京峦海阜程科技发展有限责任公司 | Blockage removing device and method for offshore oilfield pipeline |
| CN112718722B (en) * | 2020-12-17 | 2022-08-12 | 北京峦海阜程科技发展有限责任公司 | Blockage removing device and method for offshore oilfield pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0871835A1 (en) | 1998-10-21 |
| NO983462L (en) | 1998-09-28 |
| ID16483A (en) | 1997-10-02 |
| MX9806065A (en) | 1998-11-29 |
| NO983462D0 (en) | 1998-07-28 |
| EA000590B1 (en) | 1999-12-29 |
| EA199800616A1 (en) | 1999-06-24 |
| WO1997028398A1 (en) | 1997-08-07 |
| US5924454A (en) | 1999-07-20 |
| AU1433997A (en) | 1997-08-22 |
| TR199801466T2 (en) | 1998-10-21 |
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
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